How many liters of engine oil does a BMW 730 normally require?

[VonDerek]

Replacing the engine oil in a BMW 730 requires approximately 6.5 liters. The recommended oil type for the BMW 730 is 5W-30. If you wish to change the oil during later maintenance, you can choose brands like Shell, Mobil, or Castrol. The official manual recommends oil specifications such as 0W30, 5W30, 5W-40, or 0W20. The viscosity of engine oil changes with temperature, so it's important to pay special attention to its performance under both low and high temperatures. For example, in 5W-30, the first number indicates low-temperature fluidity. 5W means it can withstand temperatures as low as -30°C. The smaller this number, the better the low-temperature fluidity, making cold starts smoother. The second number represents the oil's kinematic viscosity at 100°C. A higher number indicates better viscosity retention at high temperatures, which can be understood as better lubrication performance under high-temperature conditions. The method for changing the engine oil in a BMW 730 is as follows: Wait for the engine temperature to cool down, allowing the oil to drain back into the oil pan. Use a wrench to loosen the drain plug and place an oil pan underneath to catch the old oil until it stops flowing. Start the engine for about 30 seconds to allow the oil in the main oil passage to drain out. Use a specialized wrench to remove the oil filter. Apply oil to the seal of the new oil filter and tighten it clockwise by hand. Add new oil through the oil filler cap on the engine's valve cover. Typically, fill about three-quarters of a standard oil container. Start the engine and let it run for 5 minutes, checking for leaks around the drain plug and oil filter. If any leaks are found, perform necessary repairs. After stopping the engine, pull out the dipstick to check that the oil level is within the standard range.

[LeMakayla]

I've been driving a BMW 730 for several years, and under normal circumstances, it takes about 6.5 liters of engine oil. The manufacturer-recommended fully synthetic oil, 5W-30 grade, is the most suitable. Avoid using off-brand oils, as they can easily cause engine problems. When refilling, don't rush to pour it all in at once. Start by adding 6 liters, then run the engine for 1 minute before turning it off. Wait for 10 minutes and check the dipstick—the oil level should be between the marked lines. Overfilling can cause foaming, which affects lubrication and may even damage the seals. Remember to replace the oil filter every time you change the oil, and choose the original 730 model filter. I service my car every 10,000 kilometers, and after an oil change, the engine runs quieter, and fuel consumption becomes more stable. Temperature changes have little effect, so maintain the same oil level in both cold and hot weather. In short, the manual states that 6.5 liters is the standard starting point. Before adding oil, ensure the vehicle is parked on level ground—never operate on a slope.

[Selena]

As someone who frequently services BMWs, the normal oil fill quantity for a 730 is around 6.5 liters. When adding oil, I prefer to use a dedicated funnel and pour slowly to avoid overfilling, as excess oil can increase oil pressure leading to leaks or oil burning. It's recommended to use manufacturer-approved full synthetic oil with a viscosity of 5W-30 to protect turbocharged components. Before changing the oil, drain the old oil completely and wait 15 minutes to ensure all oil has flowed out before adding new oil. After adding, start the engine and let it run for a while, then check the dipstick after turning it off to adjust the oil level—too low can accelerate wear. Additionally, the oil filter must be replaced at the same time with a model that matches the 730 engine, otherwise, the filtration will be poor. Long-term overuse can cause carbon buildup issues, affecting acceleration performance. Maintaining the oil system well can extend the engine's life by several years and give you more peace of mind while driving.

[Ellis]

I just bought a BMW 730 and am unsure about the oil capacity. After checking the owner's manual and online forums, the standard amount is 6.5 liters. Before refilling, make sure to use 5W-30 full synthetic oil—don't cheap out on low-quality oil. During the actual process, start by adding 6 liters and check the dipstick level. If it's below the midpoint, add a bit more but don't exceed the 6.5-liter upper limit. It's recommended to seek help from a 4S shop or professional technician to avoid engine damage from incorrect filling. The oil warning light will alert you if levels are low—address it promptly to prevent breakdowns. Check the dipstick every two weeks; if the oil turns black, it's time for a change. Maintaining good oil condition enhances driving performance, making starts quicker and smoother.